POWER MONITORING SYSTEM

ERVATECH Multifunction Digital Meter E-93

E-93 is a multi-functional meter capable of measuring and displaying electrical parameters of 3 phase system network for balanced load or not, and can be used for measurement in low and medium voltage systems.

With build-in MODBUS-RTU protocol, E-93 can match most of the system integrate requirment.

。Suit for LV & HV voltage, up to 650kV voltage system (PT value settable)
。High accuracy IEC62053-22 class 0.5s
。Dual Source kWh Energy Monitoring for both grid and generator
。Build-in MODBUS-RTU via RS485 port
。True RMS monitoring
。THD & 31st Harmonic analysis with bar chart display
。Phase sequence adjustment,2DI + 2DO

APPLICATION

- Control Panel

- Panel Distribution

- Energy Monitoring System (Energy Monitoring System)

- Power Quality Analysis

ENERGY METER E-31

· Accuracy ±0.5 RDG (current/voltage)

· Energy meter

· Instantaneous variables readout: 3 DGT

· Energies readout: 7 DGT

· System variables: W, var, PF, Hz, Phase-sequence.

· Single phase variables: VLL, VLN, A, PF

· Energy measurements: total kWh and kvarh

· TRMS measurements of distorted sine waves (voltages/currents)

· Self power supply

· Dimensions: 4-DIN modules and 72x72mm

· Protection degree (front): IP50

· Application adaptable display and programming procedure (Easyprog function)

· Easy connections management

· Detachable display

· Multi-use housing: for both DIN-rail and panel mounting applications

Operating temperature

-25°C to +55°C (-13°F to 131°F) (R.H. from 0 to 90% non-condensing @ 40°C) according to EN62053-21 and EN62053-23

Connections

Screw-type

Cable cross-section area 2.4 x 3.5 mm

Housing

Dimensions (WxHxD) 72 x 72 x 65 mm

Material

Noryl PA66, self-extinguishing: UL 94 V-0

Mounting

Panel and DIN-rail

Weight

Approx. 400 g (packing include)

ERVATECH CURRENT TRANSFORMER

ERVATECH LV CURRENT TRANSFORMER

A completely enclosed of current transformer most appropriate for use in low voltage switchboard plats and key components in measurement system. Current transformer are used to transformhigh primary currents to low measurement current for instrument such as ammeters and kWh meters. Current transformer protect delicate instruments against overload currents and also give separation of main voltage from the measuring circuit. The current transformers are manufactured from high quality material throughout, the connection terminals are nickel plated brass. Each terminal has two bolts enabling easy changing of instruments without opening circuit of transformer.

The most current transformer need the special mounting and the ERVATECH ERM series used the mounting of DIN typing without a lot of times.The protective cover for terminal block used the switching device with safety and quick.

Feature:

1:Three built in fixing methods: Panel/Din Rail/Busbar

2:Built in hinged terminal cover

3:Compact design

4:Primary current up to 3000A

Applications:

1:Current measurement, monitoring and protection for electrical wiring and equipment.

2:Current and power measurement for electric motors, lighting, air compressor, heating and ventilation system, air-condition equipment and automation - control system.

3:Current, power and energy monitoring device.

4:Relay protection device.

Specifications

Rated Frequency : 50/60Hz
Rated Test Voltage : 3KV AC (1min)
Rated shot-time thermal current (Ith) : 60In
Rated dynamic current (Idyn) : 2.5Ith
Rated voltage (Um) : 0.72KV AC
Continuous overload (Id) : 1.2In
Operating temperature : -10°C ~ 50°C
Housing self-extingusishing class : V0
Safety factor : FS<5
Secondary current : 5A, 1A

ERVATECH CLAMP ON CURRENT TRANSFORMER

The ERVATECH CTD series current transformer has been specially designed to facilitate their installation in new or already existing net works. They may be installed without opening any cable or bus-bar circuit. The connection of conventional CTs usually requires the interruption of the primary side circuit to pass cables or bur-bars through the transformer core or to connect such cables to the primary terminals. The ERVATECH CTD series transformers core may be easily opened and they may be installed and connected without any supply interruption. Thus saving time and the installation costs.

FEATURE

Two built in fixing methods:Base; Busbar mounting
Very easy to mounting.
Wide inner window, allowing clamping of big cables or bus-bars.Wide range of sizes to accommodate all the existing installations.
Primary current from 5A to 5000A.

FLOW METER ER-VFM-SUPLVGB

DESCRIPTION

ERVATECH ER-VFM-SUPLVGB Flowmeter is on the principle of Karman street, to measure liquid, gas and vapor even turbid liquid including micro grain and impurity. Applications: petroleum, chemical industry, paper making, metallurgy, electric force, environmental protection, food industry and etc.

FEATURES

· Small pressure loss, wide range, high accuracy;

· It is hardly affected by fluid density, pressure, temperature and viscosity when measuring volume flow under working status.

· No moving mechanical parts, thus high reliability and low maintenance.

Instrument parameters can be stable for long term.

· Flowmeter can be used in a temperature range of -40°C ~ +400°C.

· It has both analog standard signals and digital pulse signal output to match with computers and other digital systems.

ERVATECH ELECTRIC